Process of producing beta-methyladipic acid.



E STE A N rice.v

FRITZ HOFMANN AND CARL COUTELLCE, 0

F ELBERFELD, GERMANY,

ASSIGNORS '10 FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF ELBERFELD, GERMANY, A

CORPORATION OF GERMANY.

PROCESS OF PRODUCING BETA-METHYLADIPIC ACID.

No Drawing. I

To all whom it may concern:

Be it known that we, Fnrrz HOFMANN and CARL COUTELLE, doctors of philosophy, chemists, citizens of the German Empire, residing at Elberfeld, Germany, have invented new and useful Improvements in New Processes for Producing Beta-Methyladipic Acid, of which the following is a specification.

Our invention relates to a new and valuable process for producing beta-methyladipic acid which is a valuable intermediate compound for producing other products of technical importance.

The new process consists in treating paramethylcyclohexanon Gill o H Specification of Letters Patent. Application filed November 23, 1909. Serial No. 529,545.

Patented May a, 1911.

evaporation and subsequentcooling. Other oxidizing agents can be used. The formation of the product takes probably place according to the following formula:

iHB clHz L H C H C42 C'Hz C42 oHz we H2 CH2 CH COOH. C O COOH Methyladipic acid is mainly used in synthetic chemistry for the production of pharmaceutical products, colors, terpenes and other vtechnical substances."

1. The process for producing beta-methyladipic acid, which process consists in treating para-methyl-cyclohexanon with oxidizing agents, substantially as described.

2. The process for producing beta methyh adipic acid, which process conslsts 1n treating para-methylcyclohexanon with nitric,

acid, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

FRITZ HOFMANN. [1,. 8.] CARL OOUTELLE. [1 5.

Witnesses:

O'rro Komc, CHAS J. VRIGHT. 

